Keep everything you need for grilling on hand with the Primo Two-Piece Island top for the Oval 300 and 400 grills! Built from marine-grade HDPE plastic, they'll take just about any kind of punishment you can throw at them. Along with their resistance to damage, they're resistant to molds, stains, mildew, and even more. Primo also includes UV inhibitors in the plastic also help prevent sun damage, so they'll keep looking as good as they did the day you put them on.